Lesson Plan: Tests for Gases and Water Chemistry
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to use qualitative chemical tests to identify water and common gases, including hydrogen, oxygen, carbon dioxide, and chlorine.
Objectives
Students will be able to
- describe and recognize the use of copper(II) sulfate to test for water,
- describe and recognize the pop sound a lit splint gives as the test for hydrogen,
- describe and recognize the relighting of a glowing splint test for oxygen,
- describe and recognize the limewater test for carbon dioxide,
- describe and recognize the damp red litmus paper test for ammonia,
- describe and recognize the damp blue litmus paper test for chlorine,
- describe and recognize the use of aqueous potassium manganate to test for sulfur dioxide,
- identify the gas based on the results of the above tests,
- suggest which test could be used to show the formation of products or progression of a given reaction.
Prerequisites
Students should already be familiar with
- testing for acids and bases using litmus paper.
Exclusions
Students will not cover
- tests for cations or anions,
- tests for any other gases than those listed above.
